Selective Dielectric Substrate Activation via Localized Radiation
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Solution Overview
Problem
Existing methods for selective activation of dielectric substrates, such as those used in electronic circuit assembly, require the unspecific introduction of activating compounds into the substrate material or the application and removal of layers, which are inefficient and costly, and often necessitate complex recycling processes.
Innovation Solution
A method involving the application of a liquid containing activating chemical compounds to specific areas of a dielectric substrate, followed by electromagnetic radiation to bind these compounds to the substrate surface, allowing for selective activation without the need for unspecific introduction into the substrate material or application/removal of layers, enabling efficient and cost-effective metallization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If activating chemical compounds are introduced unspecifically into the entire substrate material, then activation can be achieved, but material costs increase and recycling becomes complex
Solution Approach 1:
The patent applies activating chemical compounds only to specific local areas of the substrate surface where activation is needed, rather than throughout the entire substrate. This is achieved by applying the liquid containing activating compounds selectively to the areas to be activated, thereby reducing material consumption and simplifying recycling while maintaining effective activation where required.
2Manufacturing precision
If a coating layer is applied over the entire substrate surface and then removed, then selective activation is achieved, but technological effort and process complexity increase
Solution Approach 1:
The patent extracts the activating compounds from a hypothetical full-surface coating approach and applies them directly only to the specific areas needing activation. This eliminates the unnecessary steps of applying and removing a full-surface coating, reducing process complexity while maintaining the ability to achieve selective activation with high precision.
Solution Approach 2:
The patent performs preliminary application of the liquid containing activating compounds only to the specific areas that will be activated, before the electromagnetic radiation step. This preliminary selective application avoids the need for subsequent removal operations and simplifies the overall process while ensuring precise activation locations.
3Loss of substance
If activating compounds are applied to specific areas, then material costs are reduced, but activation efficiency may decrease
Solution Approach 1:
The patent uses a liquid application method (hydraulic approach) to deliver the activating compounds to the specific areas needing activation. This liquid application can be precisely controlled to ensure adequate coverage and concentration in the target areas, maintaining high activation efficiency while using minimal material throughout the process.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method allows for the efficient and cost-effective selective activation of dielectric substrates, enabling the production of electronic circuits with reduced material costs and simplified processes, while maintaining the original properties of the substrate, and allows for the creation of complex electronic structures without the need for additional auxiliary layers.
Implementation Method 1
irradiation with electromagnetic radiation of an area to be activated on the surface of the substrate, by means of which the area to be activated is converted into an activated area
Data Source
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AI summary
The invention relates to a method for the selective activation of a region of the surface of a dielectric substrate (1) by connecting the region with at least one activating chemical compound. In this process, a liquid (2) containing the activating chemical compound is applied to the surface of the substrate (1), and at least one region (3.1, 3.2) to be activated is irradiated with electromagnetic radiation (6) through the liquid (2). The invention further relates to a device for selective activation comprising a radiation source (5) for providing the electromagnetic radiation (6) and imaging optics (5.2) for imaging the electromagnetic radiation (6) as a focal spot (7) on a region (3.1, 3.2) to be activated.2) the surface of the substrate (1) and with at least one spray nozzle for spraying a liquid containing at least one activating chemical compound (2) at least over the extent of the focal spot (7) onto the area to be activated (3.1, 3.2).